Rotary tool-head for lathes.



Patented Dec. 3!, l90l.

E. HUHN &. A. WAGNER.

ROTARY TOOL HEAD FOR'k/HHES.

(Applicltion filed Aug. 8, 1901.) (No Model.)

a L y INVENTORS w/nvsssss; I I M ATTORNE ys.

UNITED STATES PATENT OFFICE.

ERNST HUHN AND ALBREOHT WAGNER, OF LEIPSIC, GERMANY, ASSIGNORS TO LEIPZIGER WERKZEUG-MASCHINEN-FABRIK VORM. W. V. PITTLER, A. G., OF LEIPSIO-WAHREN, GERMANY, A CORPORATION OF GERMANY.

ROTARY TOOL-HEAD FOR LATH ES.

SPECIFICATION forming part of LettersPatent No. 690,290, dated December 31, 1901. Application filed August 6,1901. Serial No. 71,016. (No model.)

To aZZ whom it may concern: tool-socket e,whieh is located opposite to the Be it known that we, ERNST HUHN and AL- lathe-spindle h, coincides with the axis of BREOHT \VAGNER, citizens of the Empire of the spindle, the center of the intermediate Germany, residing at Leipsic, Germany, have guideway o, and the center of an opening a",

invented certain new and useful 'Improvewhich is arranged inthe carriage a, so that 55 ments in Rotary Tool-Heads for Lathes, of work-pieces of greater length can be passed which the following is a specification. freely through the tool-head d and carriage or.

This invention relates to an improved ro-- For turning the tool-head two bevel-wheels tary tool-head for lathes which is arranged i and 70 are arranged, one being attached to m at an angle of inclination to the axis of the the under side of the tool-head, the other to 60 lathe-spindle and adapted to be shifted by a shaft 1, turningin bearings of the carriage. suitable mechanism during the return mo- The position ofthe bevel-wheels z'and 7c cortion of the tool-head, so that the next tool is responds to the position of the tool-head toplaced in position for work; and the invenward the carriage a. To the shaft Z of the tion consists of arotary tool-head comprising bevel-wheel iis keyed a shifting disk m, 6 a carriage for supporting the tool-head at an which during the return motion of the carangle of inclination to the axis of the latheriage a is turned by engagement with the spindle, meansfor intermittently rotating the shifting lug n on the bed-frame Z). During tool-head during the return of the carriage, the return motion of the carriage a a lever means for locking the tool-head, and means 0, which serves to actuate the index-bolt g, 7c for releasing the locking mechanism during is simultaneously oscillated, so as to withthe return motion of the carriage. draw the index bolt. The lever o is ar- In the accompanying drawings, Figure 1 ranged in the carriagein such relation to the represents a vertical longitudinal section of index-bolt 9 that the lower end is raised out our improved rotary tool-head for lathes; of the line of gravity, so that the weight and Fig. 2 is a plan View of the same, partly thereof exerts a constant upward force upon in horizontal section on line 2 2, Fig. 1. the index-bolt and keeps the upper end of the Similar letters of reference indicate corresame in engagement with the index-opening sponding parts. f until the lower end of the lever is raised by 30 The support for our improved rotary toolpassing over the lug n in the backward mohead consists of a carriage a, which is reciption of the carrirge, thereby withdrawing the rocated on the rails of the bed-frame Z) in the index-bolt and permitting the rotating of the usual manner. The carriage or is provided tool-head. V with aninclined seat, to which is attached an The operation of our improved tool-head is 35 intermediate piece c,which furnishesa guideas follows: When the tool-head d is located way for the rotary tool head cl, that is arin its working position, asshown in the drawranged, like the seat of the carriage, at an ings, the index-bolt gis locked into one ofthe angle of inclination to the axis of the latheindex-openings f and holds thereby the toolspindle. A number of tool sockets e are head 01 firmly in position. When the car- 0 drilled into the head 61 in such manner that riage a is moved backward, the lower end of the axis of all the sockets e intersect each the index-lever o is made to slide over the inother at a point 2, located in the continuaclined end of the lug n, so as to pull the intion of the axis of the lathe-spindle, as shown dex-bolt g in downward direction and release in dotted lines in Fig. 1. Bymeans of the inthe tool-head. At the moment when the index-holes f, of which a number corresponddex-bolt g is withdraw from its indeX-open- 5 ing to the socket-holes e are arranged in the ing f the pin 13 of the shifting disk m abuts tool-head, and the index-bolt gthe tool-head against the shifting lug n, arranged on the d is locked in sucha manner that the axis of bed-frame b, so that motion is transmitted by one tool-socket e is always in line with the the bevel-wheels iand lo to the tool-head, so

50 axis of the lathe-spindle h. The axis of the as to turn the same on its support. The turn- I00 ing of the shifting disk m bringsthe next pin 19 along theface q of the shifting lug n, so that it takes, after the shifting motion is completed, the position before occupied by the pin 19. The tool-head d is then looked again by the index-bolt g for the action of the next tool, and so on.

Having thus described our invention, We claim as new and desire to secure by Letters Patent- 1. In a lathe, the combination with a reciprocating carriage and a rotary tool-head supported thereon at an angle of inclination to the axis of the lathe-spindle, of means for locking the tool-head consisting of a lockingbolt aranged in said carriage, index-openings provided in the bottom of said tool-head, a lever connected with said locking-bolt and having the lower end raised out of the line ofgravity, means for actuating said lever and said locking-bolt upon the return of the carriage, and said latter means adapted to intermittently rotate said tool-head, substantially as set forth.

2. In a lathe, the combination with a reciprocating carriage and a rotary tool-head supported thereon at an angle of inclination to the axis of the lathe-spindle and havinga plurality of tool-sockets, of means for intermittently rotating said head, consisting of a bevel-gear on the bottom thereof, a bevel- Wheel,a shaft, a shifting disk provided thereon, a plurality of pins projecting therefrom corresponding to the number of said toolsockets, means for releasing the same, said latter means adapted to operate said rotating means and said locking means upon the return of the carriage, substantially as set forth.

In testimony that we claim the foregoing as our invention we have signed our names in presence of two subscribing Witnesses.

ERNST HUHN. ALBRECHT \VAGNER.

\Vitnesses RICH VOIGTLANDER, RUDOLPH FRICKE. 

